High Occupancy Vehicle (HOV) Exemption Rule Criteria for Low Emission/Energy Efficient Vehicles (Proposal).

Removing Regulatory Barriers for Vehicles with Automated Driving Systems.

Safe Integration of Automated Driving Systems-equipped Commercial Motor Vehicles.

Schedule of Fees.

Anthropomorphic Test Devices; THOR 50th Percentile Adult Male Test Dummy; Incorporation by Reference.

Proposed Rule; Availability of Supplemental Information.

Renewable Fuel Standard (RFS) Program: Standards for 2026 and 2027, Partial Waiver of 2025 Cellulosic Biofuel Volume Requirement, and Other Changes.

Moped Safety Guidelines.

Regulatory Review - 2021.

NCAP - Purchasing Decisions, Vehicle Safety Improvements, Occupant Protection.